ISO 14617-10:2002

Overview

ISO 14617-10:2002 - Graphical symbols for diagrams, Part 10: Fluid power converters - specifies standardized graphical symbols used in technical diagrams to represent fluid power conversion units (such as hydraulic pumps, pneumatic compressors, and motors). It is one part of the ISO 14617 series that provides a harmonized symbol library for engineering and process documentation. The document defines symbols, application rules and examples for clear, consistent representation of fluid power conversion devices in technical diagrams.

Key topics

• Scope and purpose
  • Standardizes graphical symbols for fluid power conversion units (pumps, motors, pump/motor combinations, torque converters, intensifiers, linear fluid motors and cylinders).
• Terms and definitions
  • Includes core terminology from ISO 5598 such as positive displacement pump, rotodynamic pump, capacity (displacement), over-centre pump, and uni‑flow pump.
• Symbol catalog
  • Basic symbols for hydraulic and pneumatic pumps and motors, pump/motor combinations, semi-rotary motors, rotary torque converters, pneumatic‑hydraulic converters, and linear fluid cylinders.
• Supplementary symbols and modifiers
  • Symbols for adjustability, preset adjustability, flow/force forms (constant, sinusoidal, pulse, stepping), and type indicators (positive displacement vs rotodynamic).
• Application rules and examples
  • Guidance (e.g., R201, R221, R2311) on placement and combination of supplementary symbols, and applied examples (X2401–X2444) demonstrating real‑world diagram use.

Applications

Who uses ISO 14617-10 and why:

• Hydraulic and pneumatic system designers - to create unambiguous system schematics and OEM documentation.
• Technical illustrators and CAD drafters - ensuring consistent symbol usage in assembly drawings, installation guides, and maintenance manuals.
• Control and systems engineers - integrating fluid power converters into process and control diagrams for troubleshooting and commissioning.
• Maintenance and training teams - producing standardized diagrams for repair procedures and operator instruction.
• Standards committees and technical authors - harmonizing symbol usage across international documentation and manuals.

Typical uses:

• Design and documentation of pumps, motors and fluid cylinders
• System schematics for mobile machinery, industrial hydraulics, and pneumatic systems
• Installation diagrams, network maps, and product datasheets

Related standards

• ISO 14617 series (Part 1: general info and indexes; Part 2: general symbols; Part 9: pumps, compressors and fans)
• ISO 5598 (Fluid power vocabulary)
• ISO 81714-1 (Design rules for graphical symbols)

Using ISO 14617-10 helps ensure clarity, interoperability and professional, standards-compliant technical documentation for fluid power systems.